1. The hatchability of chicken eggs as influenced by environment and heredity. Storrs Agric. Exp. Sta. Monograph 1 (rev.);Landauer,1967
2. Biological principles of incubation;Orlov,1962
3. Structural and functional development;Romanoff,1960
4. Ontogeny of embryonic behavior in Aves. II. The mechanical factors in the various stages leading to hatching;Kuo;J. Exp. Zool.,1932
5. General development, postural changes, activity and relationship between the embryo and other structures within the shell;Freeman,1974